A man was shot after an argument escalated at a day labor staffing facility in the Near Northside on Monday night, police said.

The shooting occurred at Elysian and Boswell around 10:45 p.m.

Two men got into a fight inside the building, where people can pick up day jobs, and one of them pulled out a gun and shot the other in the shoulder, said Lt. Larry Crowson of the Houston Police Department.

A security guard working at the building detained the gunman until police arrived. He’s now in custody, Crowson said.

The wounded man was taken to the hospital in serious but stable condition and is expected to survive.